<template>
    <div class="wrapper">
        <!-- header -->
        <header>
            <p>商家列表</p>
        </header>

        <!-- 商家列表 -->
        <ul class="business">
            <li
                v-for="item in businessArr"
                @click="toBusinessInfo(item.businessId)"
            >
                <div class="business-img">
                    <img :src="item.businessImg" />
                    <div
                        class="business-img-quantity"
                        v-show="item.quantity > 0"
                    >
                        {{ item.quantity }}
                    </div>
                </div>
                <div class="business-info">
                    <h3>{{ item.businessName }}</h3>
                    <p>
                        &#165;{{ item.starPrice }}起送 | &#165;{{
                            item.deliveryPrice
                        }}配送
                    </p>
                    <p>{{ item.businessExplain }}</p>
                </div>
            </li>
        </ul>
        <!-- 底部菜单 -->
        <Footer></Footer>
    </div>
</template>

<script>
import Footer from "../components/Footer.vue";

export default {
    name: "BusinessList",
    data() {
        return {
            orderTypeId: this.$route.query.orderTypeId,
            businessArr: [],
            user: {},
            token: ''
        };
    },
    created() {
        this.user = this.$getSessionStorage("user");
        this.token = this.$getSessionStorage("token");

        //根据orderTypeId查询商家信息
        let url = `BusinessController/listBusinessByOrderTypeId/${this.orderTypeId}?token=${this.token}`;
        this.$axios
            .get(url)
            .then((response) => {
                this.businessArr = response.data.result;
                //判断是否登录
                if (this.user != null) {
                    this.listCart();
                }
            })
            .catch((error) => {
                console.error(error);
            });
    },
    components: {
        Footer,
    },
    methods: {
        listCart() {
            this.token = this.$getSessionStorage("token");
            let url = `CartController/listCart/${this.user.userId}?token=${this.token}`;
            this.$axios.get(url).then((response) => {
                    let cartArr = response.data.result;
                   //遍历所有食品列表
                    for (let businessItem of this.businessArr) {
                        businessItem.quantity=0;
                        for(let cartItem of cartArr){
                            if(cartItem.businessId==businessItem.businessId){
                                businessItem.quantity += cartItem.quantity;
                            }
                        }
                    }
                    this.businessArr.sort();
                })
                .catch((error) => {
                    console.error(error);
                });
        },
        toBusinessInfo(businessId) {
            this.$router.push({
                path: "/businessInfo",
                query: { businessId: businessId },
            });
        },
    },
};
</script>

<style scoped>
/********** 总容器 **********/
.wrapper {
    width: 100%;
    height: 100%;
}

/********** header **********/
.wrapper header {
    width: 100%;
    height: 12vw;
    background-color: #0097ff;
    color: #fff;
    font-size: 4.8vw;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

/**********商家列表************/
.wrapper .business {
    width: 100%;
    margin-top: 12vw;
    margin-bottom: 14vw;
}

.wrapper .business li {
    width: 100%;
    box-sizing: border-box;
    padding: 2.5vw;
    border-bottom: solid 1px #ddd;
    user-select: none;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.wrapper .business li .business-img {
    position: relative;
}

.wrapper .business li .business-img img {
    width: 20vw;
    height: 20vw;
}

.wrapper .business li .business-img .business-img-quantity {
    width: 5vw;
    height: 5vw;
    background-color: red;
    color: #fff;
    font-size: 3.6vw;
    border-radius: 2.5vw;
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    right: -1.5vw;
    top: -1.5vw;
}

.wrapper .business li .business-info {
    margin-left: 3vw;
}

.wrapper .business li .business-info h3 {
    font-size: 3.8vw;
    color: #555;
}

.wrapper .business li .business-info p {
    font-size: 3vw;
    color: #888;
    margin-top: 2vw;
}
</style>
